Math How do i solve using the elimination method. If the system has no solution or an infinite number of solutions, state this. 2x + 10y = 58 -14x + 8y = 140
March 23, 2011

math helpA 125-ft diagonal brace on a bridge connects a support of the center of the bridge to a side support on the bridge. The horizontal distance that it spans is 25 ft longer that the height that it reaches on the side of the bridge. Find the horizontal and vertical distances ...
March 22, 2011

algebraConsider that the age, x, of a unicorn in human equivalent years can be given by the formula f(x) = - 0.001518x4 + 0.067326x3  1.4367x2 + 12.46x + 2.914. When a unicorn is 2.5 years old, what is its age in human equivalent years? What about when it is 12 years old?
March 8, 2011

word problemBobs Barber Shop estimates their gross revenue for the second quarter to be given by the polynomial 8x3  x2  2x + 4. The shop estimates their costs for that quarter to be given by x2  4x + 7. For the second quarter, find and simplify a polynomial that ...
March 7, 2011

Word ProblemSuzies flower shop estimates that supplies costs for one month will be given by the polynomial 5x2 + 4x  7. She estimates that utilities costs for one month is given by 8x + 8. Find and simplify an expression that would estimate Suzies total costs for one month.
March 4, 2011

word problemParticipants in a psychology experiment were able to memorize an average of M words in t minutes, where M = −0.001t3 + 0.1t2 Estimate the number of words memorizes after 14min where M=-0.001t^3 +0.1t^2
March 4, 2011